Latest posts of: antekh

from their FB page:

Quote

We are experiencing some downtime at the moment and are investigating the source. Will update once the issue is clarified or resolved. Apologies for the temporary inconvenience.

Sorry to double post but I have found a solution:

Code:

aticonfig --adapter=all -f --initial[code]
After that system needs to be rebooted and cgminer picked up second card.

[/code]

Hi, I have both HD 6870 and HD 7950
My system - Ubuntu 12.04
See both of them:

Code:

aticonfig --list-adapters
* 0. 01:00.0 AMD Radeon HD 6800 Series
  1. 02:00.0 AMD Radeon HD 7900 Series 

* - Default adapter

but cgminer only 1:

Code:

[2013-04-19 16:38:08] CL Platform 0 vendor: Advanced Micro Devices, Inc.                    
 [2013-04-19 16:38:08] CL Platform 0 name: AMD Accelerated Parallel Processing                    
 [2013-04-19 16:38:08] CL Platform 0 version: OpenCL 1.2 AMD-APP (1016.4)                    
 [2013-04-19 16:38:08] Platform 0 devices: 1                    
 [2013-04-19 16:38:08] 	0	Barts                    
 [2013-04-19 16:38:08] 1 GPU devices max detected

What might be going on here?

Usually people use cards only for mining, and when playing you can stop mining.

Generally you can play at lower intensity of mining, but usually it's not worth it.
I recommend either getting a second card for mining and keep your current card for playing or stop mining when you play

I also have the same problem

At the moment you can mine without problems but their website is not updating. I'm not sure why is that, but I have moved onto other pool until they fix that.

Take a look here https://en.bitcoin.it/wiki/Mining_hardware_comparison for the list of graphic cards and their performance

Quote from: LeroyB on April 18, 2013, 05:16:34 PM

@antekh - why is that? Simply because a company won't be manufacturing any ASIC chips for this or because of some other restriction?

scrypt and sha-256 are different algorithms and in short words: scrypt needs more resources (more and fast RAM) than currently available FPGAs or ASICs don't have.

You can read more here: http://en.wikipedia.org/wiki/Scrypt#Introduction also some more info here: http://security.stackexchange.com/questions/16354/whats-the-advantage-of-using-pbkdf2-vs-sha256-to-generate-an-aes-encryption-key

I have this error when trying to access it:

Quote

This page (http://blockchain.info/) is currently offline. However, because the site uses CloudFlare's Always Online™ technology you can continue to surf a snapshot of the site. We will keep checking in the background and, as soon as the site comes back, you will automatically be served the live version. Always Online™ is powered by CloudFlare | Hide this Alert

BTC-e also has lower withdraw limits and supports more crypto currencies.

Quote from: turtle83 on April 18, 2013, 05:08:52 PM

They can do any sha256 based currency.

http://dustcoin.com/mining

any of the "SHA-256" currency listed there can be mined with these chips.

It's also worth adding that any of the "scrypt" currency is quite unlikely to be mined using ASIC in near future

I think you have to specify configuration for your card, take a look here https://en.bitcoin.it/wiki/Mining_hardware_comparison on the right you have specific configs that people use.

for example:

Code:

./cgminer (connection parameters) --gpu-engine 1130 --gpu-memclock 1900 --shaders 2048 --thread-concurrency 8192 -I 13 -g 2 -w 256

Anyway, I recommend following steps from this tutorial: https://docs.google.com/document/d/1Gw7YPYgMgNNU42skibULbJJUx_suP_CpjSEdSi8_z9U/preview?sle=true It worked for me very well.

You can compare (and put) your results here: https://en.bitcoin.it/wiki/Mining_hardware_comparison
I think this is the largest list of different hardware and configurations

Quote from: lordblunt on April 18, 2013, 04:50:04 PM

I don't think they rent them out. Why would you? It makes you money from running it, more than you would make renting one out.

You can rent it in some other currency, so you'll get better value than exchanging it on the exchange.

For cgminer you have to write a script that will run in a loop and restart it when it crashes.
More details are here: https://bitcointalk.org/index.php?topic=51622.msg615755#msg615755

The larger issue is that there are different encryption algorithms used for both currencies:
bitcoin uses SHA-256
and litecion uses scrypt

Both algorithms have different properties.

SHA-256 requires very few memory, it basically can be designed as a set of logic gates. This can be done very easily in a FPGA or ASIC.

Scrypt on the other hand needs a lot of memory, which makes current FPGA or ASIC boards practically not usabe usable for this kind of algorithms.

So at the moment there is not known implementation of scrypt for FPGA/ASIC and it's quite unlikely that one will appear in near future.